Velopedia Bicycle Archive

2009 Specialized Hotrock A1 FS Girls

Original specifications: Mountain Mix drivetrain · 24" wheels.

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At a glance

Model year
2009
Category
Kids
Original MSRP
$420.00
Sizes
11.5", 13.5"
Colors
Gloss Black
In this record
25 specifications · archived image · original MSRP
Archive ID
15737
Model history 2 other years
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Historical catalog variants

Archived sizes and colors

2 item records

Item-level catalog entries recovered from Velopedia’s original bicycle archive. They document how this model was listed historically; they do not identify the frame size associated with legacy reference geometry or indicate current availability.

Published sizes

11.5"13.5"

Published colors

Gloss Black
View 2 archived size/color combinations
SizeColor
11.5"Gloss Black
13.5"Gloss Black

Historical catalog evidence. Exact specifications and naming may vary by market, production run or manufacturer revision.

Frameset

Frame ConstructionTIG-welded
Frame MaterialSpecialized A1 Premium Aluminum
ForkRST Capa T24ML, 51mm travel
Fork MaterialChromoly/Hi-ten/alloy, single crown

Drivetrain

Component GroupMountain Mix
ShiftersTwist-shift
CranksetSR Suntour Junior, 22/32/42 teeth
Bottom BracketFSA BB-7420, 113mm spindle
BB Shell Width68mm
Rear Cogs7-speed, 13 - 34 teeth
ChainKMC Z7
PedalsComposite

Brakes

BrakesAlloy Linear Pull brakes, Alloy levers

Cockpit & Contact Points

Headset1 1/8" Threadless
HandlebarAlloy riser, Kid's
Handlebar ExtensionsNot included
StemAlloy
SaddleSpecialized BG Rival Kid's
SeatpostAlloy Micro Adjust, 27.2mm diameter

Wheels & Tires

HubsSpecialized forged alloy
RimsAlex HRXC, 32-hole
SpokesStainless steel, 15ga. (1.8mm)
Spoke NipplesBrass nipples
Front Tire24 x 1.80" Specialized Fast Trak
Wheel Size24" wheels

Published drivetrain ratios

Gearing

Chainring ÷ rear sprocket

Lower ratios provide more mechanical advantage for climbing. Higher ratios turn the rear wheel farther with each crank revolution.

Published build42/32/22T · 13–34T · 7-speed
Lowest0.65:1 Highest3.23:1 Total range499%

The bar uses the same mechanical-ratio calculation as Compare. Wheel-dependent speed appears only when the record includes an exact ISO/ETRTO rear tire size; no tire size is assumed.

Parts & serviceability

Find replacement parts

3 top part searches
ChainExact archived part
KMC Z7 Exact archived model
Front tireMatching fit standard
24x1.80" Specialized Fast Trak Named tire and published size
Brake padsMatching fit standard
Linear-pull brake pads Published brake type — verify pad mounting style
More qualified parts (4)
Bottom bracketExact archived part
FSA BB-7420, 113mm spindle Exact archived model
SaddleQualified part search
Specialized BG Rival Kid's Named archived component — verify exact version
SeatpostMatching fit standard
27.2 mm seatpost Published diameter — verify length and setback
RimsQualified part search
Alex HRXC, 32-hole Named archived component — verify dimensions

Searches use the archived manufacturer specification, not the components currently installed on a particular bicycle. Confirm the exact model, size and fit before ordering. As an Amazon Associate I earn from qualifying purchases. Velopedia may also earn from qualifying eBay purchases. Velopedia may also earn from qualifying retailer purchases. Commercial relationships do not influence Archive specifications or analysis.

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Bike-specific inspection checklist 20 checks based on 6 archived component groups Open checklistClose checklist
0 of 20 checked Progress stays in this browser for this bike.

This checklist uses the archived equipment for this bike. It cannot confirm the condition, service history or later component changes of the example in front of you.

Archived: 2009 Specialized Hotrock A1 FS Girls · Juvenile mountain bike, suspension · Published sizes: 11.5", 13.5"

Archived: Frame: TIG-welded · Fork: RST Capa T24ML, 51mm travel · Chromoly/Hi-ten/alloy, single crown

Archived: Fork: RST Capa T24ML, 51mm travel

Archived: Group: Mountain Mix · Shifters: Twist-shift · Crankset: SR Suntour Junior, 22/32/42 teeth · Bottom bracket: FSA BB-7420, 113mm spindle · Rear cogs: 7-speed, 13 - 34 teeth · Chain: KMC Z7

Archived: Brakes: Alloy Linear Pull brakes, Alloy levers

Archived: Wheel size: 24" wheels · Rims: Alex HRXC, 32-hole · Hubs: Specialized forged alloy · Front tire: 24 x 1.80" Specialized Fast Trak

Controls and contact points

Archived: Headset: 1 1/8" Threadless · Handlebar: Alloy riser, Kid's · Stem: Alloy · Seatpost: Alloy Micro Adjust, 27.2mm diameter · Saddle: Specialized BG Rival Kid's · Pedals: Composite

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Specifications are presented as a reference. Components may vary by market, size, production run, or later manufacturer revisions.

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